您要查找的是不是：
- The dog kept a vigilant guard over the house. 这只狗警惕地守护着这所房屋。
- He came to look at the drainage. 他是来检查排水设备的。
- The drainage system has been aged. 排水系统已经老化了。
- He urged them to guard against conceit. 他要求他们防止骄傲自满。
- He bribed his way past the guard and escaped. 他买通看守而逃之夭夭了。
- I was off my guard and made no suitable reply. 我没提防，因此没有作出适当的回答。
- The guard of honor headed up the whole parade. 仪仗队走在游行队伍的最前头。
- Everyone should be guarded by legal barricades. 人人都应受法律保障。
- The ammunition depot is heavily guarded. 弹药库戒备森严。
- The prisoners were closely guarded. 囚犯受到严密监视。
- Please guard against pickpockets on the bus. 在公共汽车上要谨防扒手。
- His jealously guarded secret was soon common property. 他小心翼翼保守的秘密很快就成为众所皆知之事。
- The soldier volunteered for guard duty. 那个战士自告奋勇去站岗。
- The dog guarded the house against strangers. 狗守卫着房屋，不让陌生人进去。
- The dog jealously guarded its bone. 那狗戒备地看管着它的骨头。
- The guard had orders to shoot on sight. 哨兵奉命见人就开枪。
- Be on your guard, I conjure you. 千万要警惕呀，我恳求你。
- Four soldiers stood guard over the coffin. 四个士兵守卫灵柩。
- The drainage of the town is not good, some of the pipes are broken. 城里的排水系统不好,有些水管断裂了。
- The guard should be watchful during the night. 警卫在黑夜里也应该警醒。
